[ новости /+++ | форум | теги | ]

NAME

     Term::Cap - Perl termcap interface



SYNOPSIS
         require Term::Cap;
         $terminal = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed };
         $terminal->Trequire(qw/ce ku kd/);
         $terminal->Tgoto('cm', $col, $row, $FH);
         $terminal->Tputs('dl', $count, $FH);
         $terminal->Tpad($string, $count, $FH);




DESCRIPTION
     These are low-level functions to extract and use
     capabilities from a terminal capability (termcap) database.

     The Tgetent function extracts the entry of the specified
     terminal type TERM (defaults to the environment variable
     TERM) from the database.

     It will look in the environment for a TERMCAP variable.  If
     found, and the value does not begin with a slash, and the
     terminal type name is the same as the environment string
     TERM, the TERMCAP string is used instead of reading a
     termcap file.  If it does begin with a slash, the string is
     used as a path name of the termcap file to search.  If
     TERMCAP does not begin with a slash and name is different
     from TERM, Tgetent searches the files $HOME/.termcap,
     /etc/termcap, and /usr/share/misc/termcap, in that order,
     unless the environment variable TERMPATH exists, in which
     case it specifies a list of file pathnames (separated by
     spaces or colons) to be searched instead.  Whenever multiple
     files are searched and a tc field occurs in the requested
     entry, the entry it names must be found in the same file or
     one of the succeeding files.  If there is a :tc=...: in the
     TERMCAP environment variable string it will continue the
     search in the files as above.

     OSPEED is the terminal output bit rate (often mistakenly
     called the baud rate).  OSPEED can be specified as either a
     POSIX termios/SYSV termio speeds (where 9600 equals 9600) or
     an old BSD-style speeds (where 13 equals 9600).

     Tgetent returns a blessed object reference which the user
     can then use to send the control strings to the terminal
     using Tputs and Tgoto.  It calls croak on failure.

     Tgoto decodes a cursor addressing string with the given
     parameters.

     The output strings for Tputs are cached for counts of 1 for
     performance.  Tgoto and Tpad do not cache.  $self->{_xx} is
     the raw termcap data and $self->{xx} is the cached version.

         print $terminal->Tpad($self->{_xx}, 1);

     Tgoto, Tputs, and Tpad return the string and will also
     output the string to $FH if specified.

     The extracted termcap entry is available in the object as
     $self->{TERMCAP}.



EXAMPLES
         # Get terminal output speed
         require POSIX;
         my $termios = new POSIX::Termios;
         $termios->getattr;
         my $ospeed = $termios->getospeed;

         # Old-style ioctl code to get ospeed:
         #     require 'ioctl.pl';
         #     ioctl(TTY,$TIOCGETP,$sgtty);
         #     ($ispeed,$ospeed) = unpack('cc',$sgtty);

         # allocate and initialize a terminal structure
         $terminal = Tgetent Term::Cap { TERM => undef, OSPEED => $ospeed };

         # require certain capabilities to be available
         $terminal->Trequire(qw/ce ku kd/);

         # Output Routines, if $FH is undefined these just return the string

         # Tgoto does the % expansion stuff with the given args
         $terminal->Tgoto('cm', $col, $row, $FH);

         # Tputs doesn't do any % expansion.
         $terminal->Tputs('dl', $count = 1, $FH);









Поиск по тексту MAN-ов: 


























Партнёры:










Хостинг:










Закладки на сайте

Проследить за страницей


Created 1996-2024 by Maxim Chirkov

Добавить, Поддержать, Вебмастеру